Wrench.



J. E. LA DOW.

WRENCH.

Arrmou on nun 001a, 1900.

9235665. Patented Jfine1,1909.

INVENTOI? JZzmesZ'. ZQJOW ATTOHNE rs rut NORRIS PIIIIS cm, wlsnniwran,D. c.

JAMES E. LA DOW, OF KELLOGG, IOWA.

WRENCH.

Specification of Letters Eatent.

latented June 1, 1909.

Application filed October 3, 1908. Serial No. 455,956.

1'0 all whom it may concern:

Be it known that 1, JAMES E. LA Dow, a citizen of the United States, anda resident of Kellogg, in the county of Jasper and State of lowa, haveinvented a new and Improved Wrench, of which the following is a full,clear, and exact description.

This invention relates to wrenches, and more particularly to areversible wrench for use with pipe or other similar material, and whichcomprises a main bar or lever, a jaw, and a compound. lever connectionbetween the jaw and the bar.

An object of the invention is to provide a simple, inexpensive ande'l'licient wrench for use with pipe or other similar material, whichwithin the limits of the wrench will fit any size of pipe, and whichserves to grip the pipe so firmly that the same is not likely to slipbetween the jaws when being turned by means of the wrench.

A further object of the invention is to provide a device of the classdescribed in which the main bar or lever can be reversed with respect tothe other parts, to permit the wrench to be operated when turned fromleft to right or from right to left, and in which the jaw is connectedwith the main bar by means of a compound lever, one member of which alsoconstitutes a jaw, the work being gripped between the jaw and the leveritV.

A still further object of the invention is to provide a wrench havingthe jaws so constructed that it is unnecessary to place either of thesame by hand in operative engagement with the work, a movement of thelever toward the work being suflicient to render the jaws instantlyoperative to grip the work.

The invention consists in the construction and combination of parts tobe more fully described hereinafter and particularly set forth in theclaims.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views, and in which Figure 1 is a sideelevation of an embodiment of my invention showing the same gripping apipe; Fig. 2 is a plan view of the device showing part of the main baror lever broken away; and Fig. 3 is a transverse section on the line 3-3of Fig. 1.

Referring more particularly to the drawings, I provide a main bar orlever 10 which may be of any suitable length, and which at one end isformed 1nto a handle 11 by means of which it can be easily manipulatedmanually. At the end remote from the handle 11 the main bar has pivotedthereon a aw lever 12 by means of a'laterally disposed and bifurcatedend 13 of the jaw lever. The sides 14 of the bifurcated part 13 arearranged at the opposite sides respectively of the main bar and arepivotally connected with the same by means of a pivot bolt 15,positioned in suitable openings of the sides 1 1 and the main bar. 611the face remote from the main bar the lever 12 is provided with teeth orserrations 16.

A curved and substantially U-shaped jaw 17, is positioned at the side ofthe lever 12 remote from the main bar, and at one end has a bifurcatedportion 18. By means of the latter it is pivoted at the end of the lever12 opposite the portion 18, a pivot bolt 19 being arranged in suitableopenings of the sides of the part 18 and of the lever 12. At the sideadjacent to the latter the jaw has teeth or serrations 20.

Links 21 arranged at the opposite sides of the jaw, the lever and themain bar, pivotally connect the jaw and the main bar and extendtransversely across the lever 12, being secured to the jaw and the mainbar by pivot bolts 22. The links are secured to the main bar at the endof the same and inter mediate the ends of the jaw, as is shown mostclearly in Fig. 1.

The work A is gripped between the lever 12 and the jaw 17 the serrationsof these members serving to prevent the work from slipping between thejaws. When the main bar is swung toward the work the lever 12 is forcedinto engagement with the same, and at the same time the jaw is drawnsecurely against the work through the agency of the links 21, the mainbar being pivoted upon the part 13 of the lever 12 which serves as afulcrum. The connection between the jaw and the main bar is thus adouble-lever or compound one and it permits the jaws to be forced verystrongly into engagement with the work.

Having thus described my invention, I claim as new, and desire to secureby Letters Patent:

1. A wrench comprising a main bar, a jaw lever having rigid therewith alaterally eX- tended part pivoted upon said main bar, a jaw pivoted atone end to said jaw lever,

and a link pivoted to said jaw intermediate the ends thereof and to saidmain bar.

A wrench comprising a main bar, a jaw lever having a laterally disposedpart pivoted upon said inain bar, a jaw pivoted upon said jaw lever at apoint remote from said laterally disposed part, and a link secured tosaid jaw intermediate the ends thereof, and secured to said main baradjacent to the end thereof.

3. A wrench comprising a main bar, aaw lever having at one end alaterally disposed part pivoted to said main bar at a point remote fromthe end of said main bar, a jaw having the ends laterally disposed, oneof said laterally disposed ends of said jaw being pivoted to said jawlever at the end remote from said laterally disposed part of said jawlever, and links pivoted to said jaw intermediate the ends thereof andto said main bar at the end thereof, said links extending transverselyof said jaw, said jaw lever and said main bar.

4. A wrench comprising a main bar, a aw lever having at one end alaterally disposed and bifurcated part, said bifurcated parthaving thesides arranged at opposite sides of said main bar and pivoted thereto ata point remote from the end of said main bar, a jaw having the endslaterally disposed, one of said laterally disposed ends of said jawbeing bifurcated and having the sides arranged at opposite sides of saidjaw lever at the end remote from said laterally (lisposed part of saidjaw lever and pivoted thereto, and links pivoted to said jawintermediate the ends thereof and to said main bar at the end thereof,said links extending transversely of said jaw, said jaw lever and saidmain bar, said jaw lever and said jaw at the adjacent sides ha vineserrations.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JAMES E. LA DOlV.

itnesses H. R. l\lol\lltnon, Anson E. CLAY.

